For sole proprietors, finding the time to build the firm is one of the biggest challenges.

More than a third of owners (35%) of one-person firms say that the toughest part is their inability to focus on generating more business, according to a survey by Score, a nonprofit group of entrepreneurial counselors, and Visa USA.

And 27% of the owners in the poll say that stretching themselves across multiple work roles and projects is what they find the most difficult in their non-employee businesses.

Photo by cavitationju….